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A nurse is preparing to administer lidocaine 50 mg IV bolus. Available is lidocaine 200 mg/mL. How many mL should the nurse administer (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["0.3"]

Calculating the Lidocaine Dose

Problem: Administer 50 mg of lidocaine IV bolus. The available concentration is 200 mg/mL.

Steps:

Set up a proportion:

We want to find the number of milliliters (mL) needed.

We know the desired dose (50 mg) and the concentration of the medication (200 mg/mL).

Proportion:

x mL / 50 mg = 1 mL / 200 mg

Cross-multiply:

200x = 50

Solve for x:

x = 50 / 200

x = 0.25

Answer: The nurse should administer 0.3 mL of lidocaine per dose(rounded to the nearest tenth).

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Correct Answer is C

Explanation

A) Enteral:
Enteral routes, such as oral or rectal, involve absorption through the gastrointestinal tract. This process generally takes longer due to factors such as digestion and metabolism in the liver before reaching systemic circulation.

B) Intramuscular:
Intramuscular injections are absorbed faster than subcutaneous injections but slower than intravenous administration. The absorption rate can be influenced by factors such as blood flow to the muscle and the drug's formulation.

C) Intravenous:
The intravenous (IV) route provides the fastest rate of absorption because the medication is delivered directly into the bloodstream, bypassing absorption barriers and ensuring immediate availability for systemic effect. This route is often used for emergency situations and precise dosing.

D) Topical:
Topical administration involves applying medication directly to the skin or mucous membranes. This route has a slower rate of absorption compared to intravenous administration due to the need for the medication to pass through the skin or mucosal barriers before entering systemic circulation.

Correct Answer is ["0.2"]

Explanation

Calculating the Morphine Sulfate Dose:Problem: Administer 2 mg of morphine sulfate IV bolus. The available concentration is 10 mg/mL.

Steps:

Set up a proportion:

We want to find the number of milliliters (mL) needed.

We know the desired dose (2 mg) and the concentration of the medication (10 mg/mL).

Proportion:

x mL / 2 mg = 1 mL / 10 mg

Cross-multiply:

10x = 2

Solve for x:

x = 2 / 10

x = 0.2

Answer: The nurse should administer 0.2 mL of morphine sulfate per dose.

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A nurse is preparing to administer lidocaine 50 mg IV bolus. Available is lidocaine 200 mg/mL. How many mL should the nurse administer (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

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Naxlex Comprehensive Predictor Exams

A nurse is teaching a class about routes of medication administration. The nurse should include that which of the following routes has the fastest rate of absorption?

Correct Answer is C

Explanation

A nurse is preparing to administer morphine sulfate 2 mg IV bolus. Available is morphine sulfate 10 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["0.2"]

Explanation

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